AirHint found the following cheapest return flights from London (LHR) to Hanoi (HAN) in January 2026 (see full year).

Return flights

07 Jan - 27 Jan	Air China
14 Jan - 26 Jan	Air China
07 Jan - 28 Jan	Air China
22 Jan - 27 Jan	Air China
21 Jan - 26 Jan	Air China
16 Jan - 26 Jan	Air China
14 Jan - 21 Jan	Air China
16 Jan - 21 Jan	Air China
14 Jan - 28 Jan	Air China
19 Jan - 28 Jan	Air China
21 Jan - 05 Feb	Air China
22 Jan - 04 Feb	Air China
22 Jan - 12 Feb	Air China
12 Jan - 04 Feb	Air China
20 Jan - 02 Feb	Air China
20 Jan - 03 Feb	Air China
21 Jan - 04 Feb	Air China
12 Jan - 02 Feb	Air China
25 Jan - 04 Feb	Air China
20 Jan - 05 Feb	Air China

Also check the deals for one-way flights from London to Hanoi in January.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Hanoi in January from 445€

Return flights